<template>
	<div>

		<section class="header text-center">
		<nav class="navbar navbar-expand-lg navbar-light navbar-custom">
			<div class="container"><a class="navbar-brand" href="index.html"><i class="fas fa-shopping-bag primary-color mr-1"></i>美多商城</a>
				<div v-if="username==''">

				<router-link to='/login' >登 录</router-link>

				/

				<router-link to='/register' >注 册</router-link>
				

			</div>

			<div v-else>
				
				欢迎您:{{ username }}

				&nbsp;&nbsp;

				<Button color="black" @click="logout">登 出</Button>

			</div>
				<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbar-1" aria-controls="navbar-1" aria-expanded="false" aria-label="Toggle navigation"><span class="navbar-toggler-icon"></span></button>
				<div class="collapse navbar-collapse pull-xs-right justify-content-end" id="navbar-1">
					<ul class="navbar-nav mt-2 mt-md-0">
						<li class="nav-item active"><a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a></li>
						<li class="nav-item dropdown mega-menu"><a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Shop </a>
							<div class="dropdown-menu" aria-labelledby="navbarDropdown">
								<div class="container">
									<div class="divider"></div>
									<div class="row">
										<div class="col-md-2">
											<h6 class="text-uppercase">Women's</h6>
											<ul class="nav flex-column">
												<li class="nav-item"><a class="nav-link active" href="#">Active</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
											</ul>
										</div>
										<div class="col-md-2">
											<h6 class="text-uppercase">Men's</h6>
											<ul class="nav flex-column">
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
											</ul>
										</div>
										<div class="col-md-2">
											<h6 class="text-uppercase">Girl's</h6>
											<ul class="nav flex-column">
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
											</ul>
										</div>
										<div class="col-md-2">
											<h6 class="text-uppercase">Boy's</h6>
											<ul class="nav flex-column">
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
												<li class="nav-item"><a class="nav-link" href="#">Link item</a></li>
											</ul>
										</div>
										<div class="col-md-4">
											<h6 class="text-uppercase">Featured Items</h6>
											<div class="row">
												<div class="col-6 text-center"><a href="item.html">
													<img src="images/placeholder-product.jpg" alt="" class="img-fluid mt-2 mb-3"></a>
													<h6 class="mb-0"><a href="item.html">Product Name</a></h6>
													<p><span class="emphasis">$49.00</span></p>
													<a href="#" class="btn btn-sm btn-outline-secondary mt-0">Buy Now</a>
										</div>
												<div class="col-6 text-center"><a href="item.html">
													<img src="images/placeholder-product.jpg" alt="" class="img-fluid mt-2 mb-3"></a>
													<h6 class="mb-0"><a href="item.html">Product Name</a></h6>
													<p><span class="emphasis">$49.00</span></p>
													<a href="#" class="btn btn-sm btn-outline-secondary mt-0">Buy Now</a>
										</div>
											</div>
										</div>
									</div>
								</div>
							</div>
						</li>
						<li class="nav-item dropdown"><a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Pages </a>
							<div class="dropdown-menu" aria-labelledby="navbarDropdown"><a class="dropdown-item" href="index.html">Homepage</a>
								<div class="dropdown-divider"></div>
								<a class="dropdown-item" href="catalog.html">Catalog</a>
								<a class="dropdown-item" href="item.html">Item Detail</a>
								<a class="dropdown-item" href="cart.html">Cart</a>
								<div class="dropdown-divider"></div>
								<a class="dropdown-item" href="contact.html">Contact</a>

							</div>
						</li>
						<li class="nav-item"><a class="nav-link" href="contact.html">Contact</a></li>
					<li class="nav-item dropdown"><input type="text" /></li>
						<li class="nav-item dropdown"><a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"><i class="fas fa-shopping-cart"></i> <span class="badge badge-pill badge-primary">3</span></a>
							<div class="dropdown-menu dropdown-menu-right dropdown-cart" aria-labelledby="navbarDropdown">
								<h6>3 Items <span class="emphasis">$147.00</span></h6>
								<div class="dropdown-divider"></div>
								<ul class="shopping-cart-items">
									<li class="row">
										<div class="col-3">
											<img src="images/placeholder-product.jpg" width="60">
										</div>
										<div class="col-9">
											<h6><a href="item.html">Product Name</a></h6>
											<span class="text-muted">1x</span>
											<span class="emphasis">$49.00</span></div>
									</li>
									<li class="row">
										<div class="col-3">
											<img src="images/placeholder-product.jpg" width="60">
										</div>
										<div class="col-9">
											<h6><a href="item.html">Product Name</a></h6>
											<span class="text-muted">1x</span>
											<span class="emphasis">$49.00</span></div>
									</li>
									<li class="row">
										<div class="col-3">
											<img src="images/placeholder-product.jpg" width="60">
										</div>
										<div class="col-9">
											<h6><a href="item.html">Product Name</a></h6>
											<span class="text-muted">1x</span>
											<span class="emphasis">$49.00</span></div>
									</li>
								</ul>
								
								<a href="cart.html" class="btn btn-lg btn-full-width btn-primary" style="margin: 0;">View Cart</a></div>
						</li>
					</ul>
				</div>
			</div>
			
		</nav>
	</section>

	</div>
</template>


<script>
	
	export default{
		//定义数据
		data(){

			return {

				msg:'<h1>这是一个变量</h1>',
				//用户名
				username:''

			}
		},
		//钩子方法  created
		mounted:function(){
			//判断是否登录
			var uname = localStorage.getItem("username");

			if(uname==null){

				//没登录
				this.username = '';

			}else{

				//登录
				this.username = uname;

			}




		},
		//自定义方法
		methods:{
			
            logout(){

                //删除localstorage
                localStorage.removeItem("username");

                //全量删除 localStorage.clear();

                //跳转
                this.$router.push('/login');

			}

			}
			



		}

	

</script>


<style>


</style>